JP2006123718A - Seat air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a seat air conditioner capable of improving comfort in cool-down by disposing a cooler having a higher immediate effect than a Peltier element.
SOLUTION: A sheet 1 having an air blowing hole 2a formed on a surface thereof, a cartridge type can 11 disposed in the sheet 1 and filled with a liquid having a low boiling point, and an ejection amount of the cartridge type can 11 are controlled. And a transport mechanism 3 connected to the valve mechanism 12 and transporting the liquid in the cartridge type can 11 to the vicinity of the air blowing hole 2a in a liquid or vaporized state. Thereby, the comfort can be improved.
[Selection] Figure 1

Description

  The present invention relates to a seat air conditioner that blows out conditioned air that is cooled toward an air blowing hole formed in a vehicle seat, and more particularly, to a configuration of a cooler that uses latent heat of vaporization.

  Conventionally, as this type of sheet air conditioner, for example, as shown in Patent Document 1, a sheet having air blowing holes formed on the surface thereof, a communication path communicating with the air blowing holes formed in the sheet, and this A Peltier element disposed in the communication path and a blower that blows air toward the air blowing hole are provided.

Further, the communication path is partitioned into a first communication path communicating with the air blowing hole and a second communication path communicating with the exhaust duct communicating with the outside of the vehicle by a partition member connected to the Peltier element. It is a feature. Thus, when the cold air cooled on the low temperature side of the Peltier element is used to blow out from the air blowing hole, the exhaust heat heated on the high temperature side of the Peltier element is exhausted to the outside of the vehicle. When the hot air heated on the side is used to blow out from the air blowing hole, the exhaust heat cooled on the low temperature side of the Peltier element is exhausted to the outside of the vehicle (see, for example, Patent Document 1).
JP 05-277020 A

  However, the Peltier device according to Patent Document 1 has a limited cooling capacity. For example, even if a vehicle is parked under hot weather and the air conditioning operation is started by driving the vehicle air conditioner and the Peltier element at the same time as getting on, the heat capacity of the seat, the periphery of the seat, and the interior of the seat is large. The sheet surface is not quickly cooled. Therefore, there is a problem that comfort is impaired in the early stage of cool-down.

  In view of the above, an object of the present invention is to provide a seat air conditioner capable of improving comfort in cool-down by disposing a cooler that is more effective than a Peltier element. There is.

  In order to achieve the above object, the technical means described in claims 1 to 5 are employed. That is, according to the invention described in claim 1, a sheet (1) having an air blowing hole (2a) formed on the surface, and a cartridge type can disposed in the sheet (1) and enclosing a liquid having a low boiling point (11), a valve mechanism (12) for controlling the ejection amount of the cartridge type can (11), and a valve mechanism (12) connected to the valve type mechanism (12). It has the conveyance means (3) conveyed in the air blowing hole (2a) vicinity in any one state, It is characterized by the above-mentioned.

  According to the first aspect of the present invention, by evaporating the liquid in the cartridge type can (11), the heat of vaporization that lowers the temperature around the can is formed. In other words, by evaporating the liquid in the cartridge type can (11) and transporting it toward the vicinity of the air blowing hole (2a), the temperature of the sheet surface near the air blowing hole (2a) can be rapidly lowered. it can. Thereby, the comfort can be improved in the cool-down.

  In the invention according to claim 2, the conveying means (3) guides the liquid in the cartridge type can (11) and blows the air toward the air blowing hole (2a) in the state of vaporized gas (51), And an air passage (3a, 3b, 3d) communicating with the valve mechanism (12) and the air blowing hole (2a).

  Specifically, according to the second aspect of the present invention, the liquid in the cartridge type can (11) is directed to the air blowing hole (2a) through the ventilation passages (3a, 3b, 3d) in the state of vaporized gas. When the air is blown, the suction temperature at which the ventilation passages (3a, 3b, 3d) are ventilated by the heat of vaporization of the liquid is lowered, so that the sheet temperature in the vicinity of the air blowing hole (2a) can be rapidly lowered. Thereby, the comfort can be improved.

  In the invention according to claim 3, the ventilation passage (3a, 3b, 3d) is provided with a Peltier element (52) for heating and cooling using heat generation and absorption by the Peltier effect. It is a feature. According to the invention described in claim 3, since the heat of vaporization of the liquid and the Peltier element (52) can be used in combination, the cooling capacity in the cool-down can be increased. Thereby, the comfort can be further improved.

  In the invention according to claim 4, the conveying means (3) guides the liquid in the cartridge type can (11) and pumps it in the liquid state to the vicinity of the air blowing hole (2a), and A water passage (14) that communicates between the valve mechanism (12) and the vicinity of the air blowing hole (2a) is provided.

  According to invention of Claim 4, it is possible to convey the liquid in a cartridge-type can (11) in a liquid state to the air blowing hole (2a) vicinity. In other words, if the vaporization of the liquid is configured in the vicinity of the air blowing hole (2a), the vicinity of the air blowing hole (2a) can be rapidly cooled, and the heat of vaporization can be used more efficiently. .

  In the invention described in claim 5, the water passage (14) is configured to vaporize the liquid in a liquid state pumped by the pump means (13) in the vicinity of the air blowing hole (2a). It is said. According to the invention described in claim 5, more specifically, the heat of vaporization can be obtained in the vicinity of the air blowing hole (2a), whereby the seat surface can be cooled more efficiently.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with the specific means of embodiment mentioned later.

(First embodiment)
Hereinafter, the seat air-conditioner in 1st Embodiment of this invention is demonstrated based on FIG. FIG. 1 is a schematic diagram showing an overall configuration of a seat air conditioner. As shown in FIG. 1, the sheet air conditioner of the present embodiment encloses a sheet 1 having a plurality of air blowing holes 2a formed on the surface thereof, a heating / cooling device 5 made of a Peltier element, and a liquid having a low boiling point. The cartridge type can 11 and a valve mechanism 12 for controlling the ejection amount of the cartridge type can 11 are configured.

  First, the seat 1 includes a backrest portion 1a and a seating portion 1b. An air blowing hole 2a is formed in the skin portion 2 on the side where a person sits, and a space 4 is formed in the lower portion of the seating portion 1b. . The back support portion 1a has a first duct 3a communicating with the space 4 therein, and a plurality of air blowing holes 2a communicating with the first duct 3a.

  The seat portion 1b has a second duct 3b communicating with the space 4 therein, and a plurality of air blowing holes 2a communicating with the second duct 3b. The heating / cooling device 5 includes a blower 51 and a Peltier element 52. The blower 51 guides the passenger compartment air into the seat 1 and blows the air toward the air outlet 2a via the Peltier element 52.

  The Peltier element 52 is a well-known thermoelectric element that converts electric power into heat, and includes a first heat exchange part 52a and a second heat exchange part 52b, and is electrically connected to a DC power source (not shown). The first heat exchanging part 52a and the second heat exchanging part 52b are composed of an electrode part (not shown) connected to a thermoelectric semiconductor inside and a large number of heat radiation and heat absorption fin parts on the outside, and current flows. The vehicle interior air guided by the blower 51 depending on the direction is heated and cooled.

  By the way, an exhaust duct 3c communicating with the outside of the seat 1 is formed in the space 4, and the exhaust duct 3c is partitioned by a partition plate (not shown) between the first duct 3a and the second duct 3b described above. That is, the air-conditioning air heated and cooled by the first heat exchanging part 52a and the exhaust gas heated and cooled by the second heat exchanging part 52b are not mixed.

  Although the downstream end of the exhaust duct 3c is opened in the vehicle interior here, the present invention is not limited to this, and the downstream end of the exhaust duct 3c may be extended to exhaust outside the vehicle interior. A temperature sensor (not shown) is provided in the first duct 3a and the second duct 3b.

  This temperature sensor detects the temperature of the conditioned air blown from the air blowing hole 2a, and is electrically connected so that the detected temperature information is input to a seat air conditioning control device (not shown).

  A suction duct 3 d is formed on the air flow upstream side of the blower 51, and one end of the suction duct 3 d is connected to the valve mechanism 12. Further, the suction duct 3 d is configured to communicate with the space 4 through the door member 53 in the middle. That is, the door member 53 operates so as to block communication between the blower 51 and the space 4 when the valve mechanism 12 is open, and to connect the blower 51 and the space 4 when the valve mechanism 12 is closed. Here, the door member 53 is configured to be driven by an actuator (not shown).

  The cartridge type can 11 is a pressure vessel in which a liquid having a low boiling point such as alcohol is enclosed, and an opening / closing valve (not shown) is provided at the head of the vessel. In other words, the internal liquid is sprayed to the outside by opening the on-off valve.

  The valve mechanism 12 is a driving means for driving the opening / closing valve, and is configured such that the cartridge can 11 can be attached and detached, and a discharge port (not shown) formed on the downstream side of the opening / closing valve. It is connected to the upstream end of the suction duct 3d. The cartridge type can 11 can be easily attached and detached, so that it can be easily replaced when the container is empty.

  Further, the valve mechanism 12 is electrically connected to a seat air-conditioning control device (not shown), and drives the on-off valve to control the ejection amount. In addition to this valve mechanism 12, in this embodiment, the blower 51, the Peltier element 52, and the door member 53 are controlled by a seat air conditioning control device (not shown).

  Moreover, 6 shown in the figure is a cushion member made of a foam material and has a function of ensuring a sitting comfort. An operation panel (not shown) is provided at a position where the operation panel can be operated while seated on the seat 1, an operation switch (not shown) for switching between operation and stop of the seat air-conditioning operation, and selection for selecting either cooling or heating. A switch (not shown), a set temperature adjustment switch (not shown), and the like are provided.

In the above configuration, the first duct 3a, the second duct 3b, and the suction duct 3c are ventilation passages referred to in the claims, and are ventilation passages in a vaporized gas state sprayed by the valve mechanism 12. Further, the blower 51 and the ventilation passages 3a, 3b, 3d are conveying means 3 referred to in the claims, and are means for conveying the vaporized gas sprayed by the valve mechanism 12 toward the air blowing hole 2a.

  Next, the operation of the seat air conditioner configured as described above will be described. By operating the operation switch (not shown), the operation of the blower 51 and the Peltier element 52 in the operation mode on the side selected by the selection switch (not shown) is started. At this time, the door member 53 drives an actuator (not shown) so that the space 4 and the blower 51 communicate with each other.

  When it is desired to cool the vicinity of the air blowing hole 2a, the selection switch (not shown) is selected on the cooling side, and then the operation switch (not shown) is operated. In the low temperature state, the second heat exchange part 52b becomes a high temperature state, and the heat in the low temperature state on the first heat exchange part 52a side and the passenger compartment air are heat-exchanged to perform cooling.

  On the other hand, when it is desired to heat the vicinity of the air blowing hole 2a, the first heat exchange unit is operated by operating the operation switch (not shown) after selecting the selection switch (not shown) to the heating side. 52a is in a high temperature state and the second heat exchanging part 52b is in a low temperature state, and the heat in the high temperature state on the first heat exchanging part 52a side and the passenger compartment air are heat-exchanged to perform heating.

  Next, after the vehicle is parked under the hot sun, the air conditioner for the vehicle is operated simultaneously with the boarding, and at the same time, the blower 51 and the Peltier element 52 are operated and the valve mechanism 12 is operated to enter the suction duct 3d. The liquid in the cartridge type can 11 is ejected. That is, the liquid in the cartridge type can 11 is sprayed by the valve mechanism 12 to be introduced into the suction duct 3d.

  The gas in the vaporized gas state guided into the suction duct 3d is blown by the blower 51 toward the air blowing hole 2a. Thereby, the sheet | seat temperature of the air blowing hole 2a vicinity can be rapidly reduced because the suction temperature which ventilates ventilation path 3a, 3b, 3d falls by the vaporization heat | fever of a liquid. Incidentally, this is shown in the characteristic diagram shown in FIG.

  FIG. 2 is a characteristic diagram showing the relationship between the sheet surface temperature and time during cool-down determined by the inventors through experiments. When the heat of vaporization of the liquid is used for the Peltier element 52 as in this embodiment, Only the element 52 is compared. That is, for example, the time required for the sheet surface temperature to decrease from 60 ° C. to 42 ° C. is obtained and compared. When the vaporization heat of the liquid is used for the Peltier element 52, the time is T1. Is T2 hours. Therefore, the present embodiment can cool the sheet surface temperature more quickly.

  Note that the amount of liquid ejected in the cartridge can 11 can be controlled by setting a predetermined number of times of opening / closing or opening time for controlling the on-off valve. Further, this ejection amount is set in advance according to the environmental conditions of the cool-down.

  According to the seat air conditioner according to the first embodiment described above, the cartridge type can 11 in which the liquid having a low boiling point is sealed, and the liquid in the cartridge type can 11 is in the state of either liquid or vaporized gas. By providing the ventilation passages 3a, 3b, and 3d and the blower 51 that are transported to 2a, the liquid in the cartridge can 11 is sprayed to form heat of vaporization that lowers the surrounding temperature.

  In other words, by spraying the liquid in the cartridge can 11 and transporting it toward the air blowing hole 2a, the suction temperature of the air flowing through the ventilation passages 3a, 3b, 3d is lowered by the heat of vaporization of the liquid, so that the air blowing The temperature of the sheet surface in the vicinity of the hole 2a can be rapidly lowered. Thereby, the comfort can be improved in the cool-down.

  The ventilation passages 3a, 3b, and 3d are provided with a Peltier element 52 that heats and cools using the generation and absorption of heat by the Peltier effect, so that the heat of vaporization of the liquid and the Peltier element 52 are reduced. Since it can be used together, the cooling capacity in the cool-down can be increased. Thereby, the comfort can be further improved.

(Second Embodiment)
In the first embodiment described above, the liquid in the cartridge type can 11 is sprayed by the valve mechanism 12 to blow the gas in the vaporized gas state to the ventilation passages 3a, 3b, 3d. You may comprise so that the liquid in the cartridge type can 11 may be conveyed to the air blowing hole 2a vicinity, and may be sprayed in the air blowing hole 2a vicinity.

  Specifically, as shown in FIG. 3, in addition to the seat air conditioning comprising the heating / cooling device 5, the first duct 3a and the second duct 3b, the cartridge type can 11, the valve mechanism 12, the pump means 13 connected thereto, Conveying means 3 is formed for conveying the liquid in the cartridge type can 11 composed of the resin pipe 14 to the vicinity of the air blowing hole 2a.

  The cartridge type can 11 of the present embodiment is a cartridge type container that contains a liquid having a low boiling point such as alcohol, and the valve mechanism 12 is an open / close valve that opens and closes the cartridge type can 11. Further, as shown in FIG. 2, the resin pipe 14 is disposed in the cushion member 6 so that one end thereof is connected to the pump means 13 and penetrates each air blowing hole 2a. A plurality of spray nozzles 15 for spraying the liquid inside is formed.

  That is, by opening the valve mechanism 12 and operating the pump means 13, the gas in the vaporized gas state can be sprayed from the spray nozzle 15 toward the air blowing hole 2a. In addition, from the valve mechanism 12 to the spray nozzle 15, the liquid in the cartridge type can 11 is transported to the spray nozzle 15 in a liquid state.

  According to the second embodiment described above, it is possible to rapidly cool only the vicinity of the air blowing hole 2a by conveying the liquid in the cartridge type can 11 to the air blowing hole 2a in a liquid state. The heat of vaporization can be used more efficiently.

  Further, since the liquid in a liquid state pumped by the pump means 13 is vaporized in the vicinity of the air blowing hole 2a, the heat of vaporization can be obtained in the vicinity of the air blowing hole 2a. The sheet surface in the vicinity of the blowout hole 2a can be cooled. In the present embodiment, the valve mechanism 12 and the pump unit 13 are configured separately. However, the present invention is not limited to this, and the pump unit 13 may have a switching function.

(Third embodiment)
In the above embodiment, the seat air-conditioning is configured so that the Peltier element 52 and the heat of vaporization are used together. However, the present invention is not limited to this, and the vicinity of the air blowing hole 2a is obtained only by the heat of vaporization by spraying the liquid in the cartridge type can 11. The sheet surface may be cooled.

  Specifically, as shown in FIG. 4, the Peltier element 52 is removed from the heating / cooling device 5, and the liquid in the cartridge type can 11 is sprayed by the valve mechanism 12 so as to be in a vaporized gas state. Guide into 3d.

  The gas in the vaporized gas state guided into the suction duct 3d is blown by the blower 51 toward the air blowing hole 2a. Thereby, the sheet | seat temperature of the air blowing hole 2a vicinity can be rapidly reduced because the suction temperature which ventilates ventilation path 3a, 3b, 3d falls by the vaporization heat | fever of a liquid.

  Further, as shown in FIG. 5, as a modified example, by removing the blower 51, the valve mechanism 12 sprays the liquid in the cartridge type can 11 into the ventilation passages 3 a, 3 b, and 3 d, thereby blowing out the air. The sheet temperature near the hole 2a may be lowered.

(Other embodiments)
In the third embodiment described above, the liquid in the cartridge type can 11 is changed to a vaporized gas state and blown out to the air blowing hole 2a through the ventilation passages 3a, 3b, 3d. 3a, 3b, and 3d may be formed of a resin pipe so that the liquid in the cartridge can 11 is transported to the vicinity of the air blowing hole 2a and sprayed in the vicinity of the air blowing hole 2a.

It is a schematic diagram which shows the whole structure of the sheet | seat air conditioner in 1st Embodiment of this invention. FIG. 6 is a characteristic diagram showing a relationship between sheet surface temperature and time in cool-down. It is a schematic diagram which shows the whole structure of the sheet | seat air conditioner in 2nd Embodiment of this invention. It is a schematic diagram which shows the whole structure of the sheet | seat air conditioner in 3rd Embodiment of this invention. It is a schematic diagram which shows the whole structure of the sheet | seat air conditioner in the modification of 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Sheet 2a ... Air blowing hole 3 ... Conveyance means 3a ... 1st duct (ventilation passage)
3b ... 2nd duct (ventilation passage)
3d ... Suction duct (ventilation passage)
DESCRIPTION OF SYMBOLS 11 ... Cartridge can 12 ... Valve mechanism 13 ... Pump means 14 ... Resin pipe (water passage)
51 ... Blower 52 ... Peltier element

Claims (5)

A sheet (1) having air blowing holes (2a) formed on the surface;
A cartridge type can (11) disposed in the sheet (1) and enclosing a liquid having a low boiling point;
A valve mechanism (12) for controlling the ejection amount of the cartridge type can (11);
Conveying means (3) connected to the valve mechanism (12) for conveying the liquid in the cartridge type can (11) in the vicinity of the air blowing hole (2a) in a liquid or vaporized state. A sheet air-conditioning apparatus comprising:   The conveying means (3) guides the liquid in the cartridge type can (11) and blows air toward the air blowing hole (2a) in the state of vaporized gas, and the valve mechanism (12). And a ventilation passage (3a, 3b, 3d) communicating with the air blowing hole (2a).   The Peltier element (52) for heating and cooling using heat generation and absorption by the Peltier effect is disposed in the ventilation passage (3a, 3b, 3d). Seat air conditioner.   The conveying means (3) guides the liquid in the cartridge type can (11) and pumps it in the liquid state to the vicinity of the air blowing hole (2a), and the valve mechanism (12). 2. The seat air conditioner according to claim 1, further comprising a water passage (14) that communicates with a vicinity of the air blowing hole (2 a).   The said water flow path (14) is comprised so that the liquid of the liquid state pumped by the said pump means (13) may be vaporized in the said air blowing hole (2a) vicinity. The described seat air conditioner.

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